CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 27, 2024	Apr. 29, 2023
Income Statement [Abstract]
Net sales	$ 7,498	$ 7,507	$ 22,825	$ 22,855
Cost of sales	6,478	6,507	19,740	19,690
Gross profit	1,020	1,000	3,085	3,165
Operating expenses	992	967	3,025	2,969
Restructuring, acquisition and integration related expenses (benefits)	9	(4)	17	1
Loss on sale of assets and other asset charges	13	4	37	0
Operating income	6	33	6	195
Net periodic benefit income, excluding service cost	(4)	(8)	(11)	(22)
Interest expense, net	37	35	112	109
Other income, net	(1)	(1)	(2)	(2)
(Loss) income before income taxes	(26)	7	(93)	110
(Benefit) provision for income taxes	(6)	(1)	(20)	13
Net (loss) income including noncontrolling interests	(20)	8	(73)	97
Less net income attributable to noncontrolling interests	(1)	(1)	(2)	(5)
Net (loss) income attributable to United Natural Foods, Inc.	$ (21)	$ 7	$ (75)	$ 92
Earnings Per Share
Basic (loss) earnings per share (in dollars per share)	$ (0.34)	$ 0.12	$ (1.26)	$ 1.55
Diluted (loss) earnings per share (in dollars per share)	$ (0.34)	$ 0.12	$ (1.26)	$ 1.51
Weighted average shares outstanding:
Basic (in shares)	59.4	59.4	59.2	59.3
Diluted (in shares)	59.4	60.4	59.2	61.0